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1369470240 = 2536559199
BaseRepresentation
bin101000110100000…
…0111010100100000
310112102220022000000
41101220013110200
510301041021430
6343520300000
745636206415
oct12150072440
93472808000
101369470240
11643037296
12322771600
1318a94c628
14cdc4610c
1580363e60
hex51a07520

1369470240 has 336 divisors, whose sum is σ = 4957848000. Its totient is φ = 357198336.

The previous prime is 1369470187. The next prime is 1369470247. The reversal of 1369470240 is 420749631.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 1369470195 and 1369470204.

It is not an unprimeable number, because it can be changed into a prime (1369470247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 6881661 + ... + 6881859.

It is an arithmetic number, because the mean of its divisors is an integer number (14755500).

Almost surely, 21369470240 is an apocalyptic number.

1369470240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1369470240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2478924000).

1369470240 is an abundant number, since it is smaller than the sum of its proper divisors (3588377760).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1369470240 is an equidigital number, since it uses as much as digits as its factorization.

1369470240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 291 (or 268 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 36.

The square root of 1369470240 is about 37006.3540490008. The cubic root of 1369470240 is about 1110.4973665891.

The spelling of 1369470240 in words is "one billion, three hundred sixty-nine million, four hundred seventy thousand, two hundred forty".